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Upstream-Status: Inappropriate [distribution: codesourcery]
gcc/
2008-07-02 Joseph Myers <joseph@codesourcery.com>
* c-incpath.c: Include toplev.h.
(merge_include_chains): Use warning instead of cpp_error for
system directory poisoning diagnostic.
* Makefile.in (c-incpath.o): Depend on toplev.h.
* gcc.c (LINK_COMMAND_SPEC): Pass
--error-poison-system-directories if
-Werror=poison-system-directories.
2007-06-13 Joseph Myers <joseph@codesourcery.com>
* common.opt (--Wno-poison-system-directories): New.
* doc/invoke.texi (-Wno-poison-system-directories): Document.
* c-incpath.c: Include flags.h.
(merge_include_chains): Check flag_poison_system_directories.
* gcc.c (LINK_COMMAND_SPEC): Pass --no-poison-system-directories
to linker if -Wno-poison-system-directories.
* Makefile.in (c-incpath.o): Depend on $(FLAGS_H).
2007-03-20 Daniel Jacobowitz <dan@codesourcery.com>
Joseph Myers <joseph@codesourcery.com>
* configure.ac (--enable-poison-system-directories): New option.
* configure, config.in: Regenerate.
* c-incpath.c (merge_include_chains): If
ENABLE_POISON_SYSTEM_DIRECTORIES defined, warn for use of
/usr/include, /usr/local/include or /usr/X11R6/include.
Index: gcc-4.7.2/gcc/common.opt
===================================================================
--- gcc-4.7.2.orig/gcc/common.opt 2012-08-06 07:34:27.000000000 -0700
+++ gcc-4.7.2/gcc/common.opt 2012-09-20 07:40:54.708937540 -0700
@@ -582,6 +582,10 @@
Common Var(warn_padded) Warning
Warn when padding is required to align structure members
+Wpoison-system-directories
+Common Var(flag_poison_system_directories) Init(1) Warning
+Warn for -I and -L options using system directories if cross compiling
+
Wshadow
Common Var(warn_shadow) Warning
Warn when one local variable shadows another
Index: gcc-4.7.2/gcc/config.in
===================================================================
--- gcc-4.7.2.orig/gcc/config.in 2012-09-20 00:23:55.000000000 -0700
+++ gcc-4.7.2/gcc/config.in 2012-09-20 07:40:54.708937540 -0700
@@ -144,6 +144,12 @@
#endif
+/* Define to warn for use of native system header directories */
+#ifndef USED_FOR_TARGET
+#undef ENABLE_POISON_SYSTEM_DIRECTORIES
+#endif
+
+
/* Define if you want all operations on RTL (the basic data structure of the
optimizer and back end) to be checked for dynamic type safety at runtime.
This is quite expensive. */
Index: gcc-4.7.2/gcc/configure.ac
===================================================================
--- gcc-4.7.2.orig/gcc/configure.ac 2012-09-20 07:30:27.000000000 -0700
+++ gcc-4.7.2/gcc/configure.ac 2012-09-20 07:40:54.708937540 -0700
@@ -4989,6 +4989,16 @@
[specify that runtime libraries should be
installed in a compiler-specific directory])])
+AC_ARG_ENABLE([poison-system-directories],
+ AS_HELP_STRING([--enable-poison-system-directories],
+ [warn for use of native system header directories]),,
+ [enable_poison_system_directories=no])
+if test "x${enable_poison_system_directories}" = "xyes"; then
+ AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES],
+ [1],
+ [Define to warn for use of native system header directories])
+fi
+
# Substitute configuration variables
AC_SUBST(subdirs)
AC_SUBST(srcdir)
Index: gcc-4.7.2/gcc/doc/invoke.texi
===================================================================
--- gcc-4.7.2.orig/gcc/doc/invoke.texi 2012-09-14 13:45:27.000000000 -0700
+++ gcc-4.7.2/gcc/doc/invoke.texi 2012-09-20 07:40:54.712937541 -0700
@@ -260,6 +260,7 @@
-Woverlength-strings -Wpacked -Wpacked-bitfield-compat -Wpadded @gol
-Wparentheses -Wpedantic-ms-format -Wno-pedantic-ms-format @gol
-Wpointer-arith -Wno-pointer-to-int-cast @gol
+-Wno-poison-system-directories @gol
-Wredundant-decls @gol
-Wreturn-type -Wsequence-point -Wshadow @gol
-Wsign-compare -Wsign-conversion -Wstack-protector @gol
@@ -3879,6 +3880,14 @@
for most targets, it is made up of code and thus requires the stack
to be made executable in order for the program to work properly.
+@item -Wno-poison-system-directories
+@opindex Wno-poison-system-directories
+Do not warn for @option{-I} or @option{-L} options using system
+directories such as @file{/usr/include} when cross compiling. This
+option is intended for use in chroot environments when such
+directories contain the correct headers and libraries for the target
+system rather than the host.
+
@item -Wfloat-equal
@opindex Wfloat-equal
@opindex Wno-float-equal
Index: gcc-4.7.2/gcc/gcc.c
===================================================================
--- gcc-4.7.2.orig/gcc/gcc.c 2012-08-06 07:34:27.000000000 -0700
+++ gcc-4.7.2/gcc/gcc.c 2012-09-20 07:40:54.716937541 -0700
@@ -673,6 +673,8 @@
%{flto} %{flto=*} %l " LINK_PIE_SPEC \
"%X %{o*} %{e*} %{N} %{n} %{r}\
%{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
+ %{Wno-poison-system-directories:--no-poison-system-directories}\
+ %{Werror=poison-system-directories:--error-poison-system-directories}\
%{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
%{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
%{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
Index: gcc-4.7.2/gcc/incpath.c
===================================================================
--- gcc-4.7.2.orig/gcc/incpath.c 2012-01-26 15:34:58.000000000 -0800
+++ gcc-4.7.2/gcc/incpath.c 2012-09-20 07:40:54.716937541 -0700
@@ -361,6 +361,24 @@
}
fprintf (stderr, _("End of search list.\n"));
}
+
+#ifdef ENABLE_POISON_SYSTEM_DIRECTORIES
+ if (flag_poison_system_directories)
+ {
+ struct cpp_dir *p;
+
+ for (p = heads[QUOTE]; p; p = p->next)
+ {
+ if ((!strncmp (p->name, "/usr/include", 12))
+ || (!strncmp (p->name, "/usr/local/include", 18))
+ || (!strncmp (p->name, "/usr/X11R6/include", 18)))
+ warning (OPT_Wpoison_system_directories,
+ "include location \"%s\" is unsafe for "
+ "cross-compilation",
+ p->name);
+ }
+ }
+#endif
}
/* Use given -I paths for #include "..." but not #include <...>, and
Index: gcc-4.7.2/gcc/Makefile.in
===================================================================
--- gcc-4.7.2.orig/gcc/Makefile.in 2012-08-06 07:34:27.000000000 -0700
+++ gcc-4.7.2/gcc/Makefile.in 2012-09-20 07:40:54.716937541 -0700
@@ -2065,7 +2065,7 @@
incpath.o: incpath.c incpath.h $(CONFIG_H) $(SYSTEM_H) $(CPPLIB_H) \
intl.h prefix.h coretypes.h $(TM_H) cppdefault.h $(TARGET_H) \
- $(MACHMODE_H)
+ $(MACHMODE_H) $(FLAGS_H) toplev.h
CFLAGS-prefix.o += -DPREFIX=\"$(prefix)\" -DBASEVER=$(BASEVER_s)
prefix.o: prefix.c $(CONFIG_H) $(SYSTEM_H) coretypes.h prefix.h \
Index: gcc-4.7.2/gcc/configure
===================================================================
--- gcc-4.7.2.orig/gcc/configure 2012-09-20 07:30:27.000000000 -0700
+++ gcc-4.7.2/gcc/configure 2012-09-20 07:41:08.548938066 -0700
@@ -914,6 +914,7 @@
with_system_zlib
enable_maintainer_mode
enable_version_specific_runtime_libs
+enable_poison_system_directories
enable_plugin
enable_libquadmath_support
with_linker_hash_style
@@ -1627,6 +1628,8 @@
--enable-version-specific-runtime-libs
specify that runtime libraries should be installed
in a compiler-specific directory
+ --enable-poison-system-directories
+ warn for use of native system header directories
--enable-plugin enable plugin support
--disable-libquadmath-support
disable libquadmath support for Fortran
@@ -18010,7 +18013,7 @@
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 18013 "configure"
+#line 18016 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -18116,7 +18119,7 @@
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 18119 "configure"
+#line 18122 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -27129,6 +27132,19 @@
fi
+# Check whether --enable-poison-system-directories was given.
+if test "${enable_poison_system_directories+set}" = set; then :
+ enableval=$enable_poison_system_directories;
+else
+ enable_poison_system_directories=no
+fi
+
+if test "x${enable_poison_system_directories}" = "xyes"; then
+
+$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h
+
+fi
+
# Substitute configuration variables
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